CN113739843A - State monitoring system and state monitoring method for electromagnetic pile hammer - Google Patents
State monitoring system and state monitoring method for electromagnetic pile hammer Download PDFInfo
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- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 13
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- 239000002689 soil Substances 0.000 description 5
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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Abstract
The disclosure provides a state monitoring system and a state monitoring method of an electromagnetic pile hammer, and belongs to the field of mechanical equipment. The state monitoring system comprises a detection module and a processing module; the detection module is used for detecting working parameters of the electromagnetic pile hammer in real time, wherein the working parameters at least comprise at least one of the running distance of a motor, the strain of an anvil iron, the voltage and the current between a driving frequency converter and the motor, the output voltage and the output current of the driving frequency converter, the temperature of the motor during running and the vibration acceleration of the anvil iron; and the processing module is used for acquiring the working parameters detected by the detection module and judging whether the electromagnetic pile hammer is in an abnormal working state or not according to the working parameters. The state monitoring system provided by the embodiment of the disclosure can detect each working parameter of the electromagnetic pile hammer in real time, thereby judging whether the electromagnetic pile hammer is in an abnormal working state in advance and improving the reliability of the electromagnetic pile hammer.
Description
Technical Field
The disclosure relates to the field of mechanical equipment, in particular to a state monitoring system and a state monitoring method of an electromagnetic pile hammer.
Background
The electromagnetic pile hammer is used as a pile-driving off-weight device, and the device state directly influences the safety of wind power installation. Conventionally, the countermeasure of the electromagnetic pile hammer fault is limited to the redundancy of the actuating mechanisms such as the motors, namely when one actuating mechanism such as the motor has a fault, the control system can automatically switch to the other actuating mechanism such as the motor, so that the pile driving failure caused by equipment fault is avoided.
The electromagnetic pile driving fault alarm system is used for carrying out alarm detection on phenomena of voltage abnormity, current abnormity, overshoot, unhooking and the like of the electromagnetic pile driving hammer. The fault alarm system only sends out sound and light alarm when a detected object has a fault, the fault cannot be judged in advance, the fault types monitored by the existing electromagnetic piling fault alarm system are limited, and the reliability of electromagnetic piling work cannot be guaranteed.
Disclosure of Invention
The embodiment of the disclosure provides a state monitoring system and a state monitoring method for an electromagnetic pile hammer, which can detect each working parameter of the electromagnetic pile hammer in real time, thereby judging whether the electromagnetic pile hammer is in an abnormal working state in advance and improving the reliability of the electromagnetic pile hammer. The technical scheme is as follows:
in a first aspect, a state monitoring system of an electromagnetic pile hammer is provided, which includes a detection module and a processing module;
the detection module is used for detecting working parameters of the electromagnetic pile hammer in real time, wherein the working parameters comprise at least one of the running distance of a motor, the strain of an anvil, the voltage and current between a driving frequency converter and the motor, the output voltage and output current of the driving frequency converter, the temperature of the motor during running and the vibration acceleration of the anvil;
and the processing module is used for acquiring the working parameters detected by the detection module and judging whether the electromagnetic pile hammer is in an abnormal working state or not according to the working parameters.
Optionally, the abnormal working state comprises at least one of an abnormality of a motor of the electromagnetic pile driving hammer, a risk of pile slipping of the electromagnetic pile driving hammer, and an abnormality of an anvil of the electromagnetic pile driving hammer;
the processing module comprises:
the first judgment unit is used for judging that the motor of the electromagnetic pile hammer is abnormal when the running distance of the motor exceeds a first set distance value or the strain of the anvil exceeds a first set strain value;
the second judging unit is used for judging that the electromagnetic pile driving hammer has a pile slipping risk when the running distance of the motor exceeds a second set distance value;
and the third judging unit is used for judging that the anvil of the electromagnetic pile hammer is abnormal when the strain of the anvil exceeds a second set strain value or the vibration acceleration of the anvil exceeds a first set acceleration value.
Optionally, the abnormality of the motor of the electromagnetic pile driving hammer comprises: the coil resistance of the electromagnetic pile hammer is at least one of abnormal heating, abnormal insulation resistance of the electromagnetic pile hammer, abnormal direct current resistance of the electromagnetic pile hammer and abnormal driving frequency converter of the electromagnetic pile hammer;
the first judging unit is used for:
when the temperature of the motor during operation exceeds a first temperature set value, judging that the coil resistance of the electromagnetic pile hammer generates heat abnormally;
when the ratio of the voltage between the driving frequency converter and the motor to the current exceeds a first ratio or the temperature of the motor during operation exceeds a second temperature set value, judging that the insulation resistance of the electromagnetic pile hammer is abnormal;
when the current between the driving frequency converter and the motor exceeds a first current value or the temperature of the motor during operation exceeds a third temperature set value, judging that the direct current resistance of the electromagnetic pile hammer is abnormal;
and when the ratio of the output voltage to the output current of the driving frequency converter exceeds a second ratio, judging that the driving frequency converter of the electromagnetic pile hammer is abnormal.
Optionally, the anvil anomaly of the electromagnetic pile hammer comprises at least one of anvil deformation and anvil over-vibration;
the third judging unit is used for:
when the strain of the anvil exceeds a second set strain value, judging that the anvil of the electromagnetic pile driving hammer is deformed;
and when the vibration acceleration of the anvil exceeds a first set acceleration value, judging that the anvil of the electromagnetic pile hammer vibrates excessively.
Optionally, the detection module comprises a displacement sensor for detecting a running distance of the motor;
the detection end of the displacement sensor is fixed on the stator component of the electromagnetic pile hammer, the detected end of the displacement sensor is fixed on the rotor component of the electromagnetic pile hammer, and the detection end and the monitored end of the displacement sensor are arranged oppositely.
Optionally, the detection module comprises a strain sensor and a vibration acceleration sensor;
the strain sensor is used for detecting the strain of the anvil; the strain sensor is arranged on a contact surface of an anvil iron of the electromagnetic pile driving hammer, which is in contact with the rotor assembly;
the vibration acceleration sensor is used for detecting the vibration acceleration of the anvil; the vibration acceleration sensor is arranged on an anvil of the electromagnetic pile hammer.
Optionally, the detection module comprises a voltage sensor and a current sensor;
the voltage sensor is used for detecting the voltage between the driving frequency converter and the motor, and the current sensor is used for detecting the voltage and the current between the driving frequency converter and the motor;
the electromagnetic pile hammer is characterized in that a connecting cable used for connecting a driving frequency converter and a motor is arranged in the electromagnetic pile hammer, a current ring is sleeved outside the connecting cable, and both the voltage sensor and the current sensor are arranged on the current ring.
Optionally, the detection module includes an output voltage sensor and an output current sensor, which are respectively used for detecting the output voltage and the output current of the driving frequency converter;
the output voltage sensor and the output current sensor are arranged in a driving frequency converter of the electromagnetic pile driving hammer.
Optionally, the detection module comprises a thermocouple sensor for detecting the temperature of the motor during operation;
the thermocouple sensor is disposed within a coil winding of the electromagnetic pile hammer.
In a second aspect, there is provided a condition monitoring method of an electromagnetic pile hammer, the condition monitoring method being applied to the condition monitoring system according to the first aspect, the condition monitoring method comprising:
detecting working parameters of the electromagnetic pile hammer in real time, wherein the working parameters comprise at least one of the running distance of a motor, the strain of an anvil, the voltage and current between a driving frequency converter and the motor, the output voltage and the output current of the driving frequency converter, the running temperature of the motor and the vibration acceleration of the anvil;
and acquiring the working parameters detected by the detection module, and judging whether the electromagnetic pile hammer is in an abnormal working state according to the working parameters.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
the state monitoring system of the electromagnetic pile driving hammer comprises a detection module and a processing module. Wherein, detection module can real-time detection electromagnetism pile hammer's working parameter. The processing module can acquire the working parameters detected by the detection module and judge whether the electromagnetic pile driving hammer is in an abnormal working state according to the working parameters, so that whether the electromagnetic pile driving hammer is in the abnormal working state is judged in advance, and the reliability of the electromagnetic pile driving hammer is improved. And the working parameters monitored by the detection module comprise at least one of the running distance of the motor, the strain of the anvil, the voltage and the current between the driving frequency converter and the motor, the output voltage and the output current of the driving frequency converter, the temperature when the motor runs and the vibration acceleration of the anvil, the working state of each working part in the electromagnetic pile hammer can be monitored comprehensively, the monitored parameter types are more comprehensive, and the monitoring reliability of the electromagnetic pile hammer can be further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a state monitoring system of an electromagnetic pile driving hammer according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for monitoring the state of an electromagnetic pile driving hammer according to an embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
For better understanding of the present application, the structure of the electromagnetic pile driving hammer in the present application is briefly described below with reference to fig. 1.
Fig. 1 is a schematic structural diagram of a state monitoring system of an electromagnetic pile driving hammer according to an embodiment of the present disclosure, and as shown in fig. 1, the structure of the electromagnetic pile driving hammer is shown. The electromagnetic pile driving hammer includes a motor 110, a hammer body 120, a driving frequency converter 130, a pile body 140, and an anvil 150. The motor 110 includes a stator assembly 111 and a mover assembly 112. The stator assembly 111 includes a sealed shell 111a and a coil winding 111b, the coil winding 111b is located in the sealed shell 111a and connected to the sealed shell 111a, a dc resistor is disposed in the coil winding 111b, and an insulation resistor is disposed between the coil winding 111b and the sealed shell 111 a. Mover assembly 112 includes a drive shaft 1121, and drive shaft 1121 is axially movably inserted into coil winding 111 b. The driving shaft 1121 is coaxially connected to the hammer 120, and the driving shaft 1121 is used to drive the hammer 120 to move in the axial direction of the coil winding 111 b. The driving inverter 130 is used to drive the motor 120 to operate. The hammer body 120 is arranged coaxially with the pile body 140, and the hammer body 120 contacts with the anvil 150 at the top of the pile body 140, so that the piling is realized. The electromagnetic pile hammer is a conventional electromagnetic pile hammer structure in the field.
The embodiment of the disclosure provides a state monitoring system of an electromagnetic pile hammer, which comprises a detection module and a processing module 220.
And the detection module is used for detecting the working parameters of the electromagnetic pile hammer 100 in real time, wherein the working parameters comprise at least one of the running distance C1 of the motor, the strain C2 of the anvil, the voltage C3 and the current C4 between the driving frequency converter and the motor, the output voltage C5 and the output current C6 of the driving frequency converter, the temperature C7 when the motor runs and the vibration acceleration C8 of the anvil.
And the processing module 220 is configured to obtain the working parameters detected by the detection module, and determine whether the electromagnetic pile driving hammer 100 is in an abnormal working state according to the working parameters.
The embodiment of the disclosure provides a state monitoring system of an electromagnetic pile hammer, which comprises a detection module and a processing module. Wherein, detection module can real-time detection electromagnetism pile hammer's working parameter. The processing module can acquire the working parameters detected by the detection module and judge whether the electromagnetic pile driving hammer is in an abnormal working state according to the working parameters, so that whether the electromagnetic pile driving hammer is in the abnormal working state is judged in advance, and the reliability of the electromagnetic pile driving hammer is improved. And the working parameters monitored by the detection module comprise at least one of the running distance of the motor, the strain of the anvil, the voltage and the current between the driving frequency converter and the motor, the output voltage and the output current of the driving frequency converter, the temperature when the motor runs and the vibration acceleration of the anvil, the working state of each working part in the electromagnetic pile hammer can be monitored comprehensively, the monitored parameter types are more comprehensive, and the monitoring reliability of the electromagnetic pile hammer can be further improved.
Optionally, the abnormal operating condition includes at least one of an abnormality of a motor of the electromagnetic pile driving hammer, a risk of the electromagnetic pile driving hammer slipping, and an abnormality of an anvil of the electromagnetic pile driving hammer.
The motor of the electromagnetic pile hammer is abnormal, which indicates that the motor part has problems and needs to be repaired or replaced. The electromagnetic pile driving hammer has pile slipping risk, which indicates that the soil is soft and is not suitable for pile driving operation. An anvil abnormality of the electromagnetic pile hammer indicates that the anvil needs to be repaired or replaced.
The processing module 220 includes a first judging unit 221, a second judging unit 222, and a third judging unit 223.
A first judging unit 221 for judging that the motor of the electromagnetic pile hammer is abnormal when the running distance C1 of the motor exceeds the first set distance value a1 or the strain C2 of the anvil exceeds the first set strain value b 1.
In the embodiment of the present disclosure, a1 and b1 may be point values, or may be a certain range of values, and specific values may be set according to actual needs.
And the second judging unit 222 is used for judging that the electromagnetic pile driving hammer has the pile slipping risk when the running distance C1 of the motor exceeds a second set distance value a 2.
In the embodiment of the present disclosure, a2 may be a point value, or may be a certain range of values, and the specific value may be set according to actual needs.
Illustratively, the first set distance value a1 < the second set distance value a 2. The first set distance value a1 is 3-6 mm, and the second set distance value a2 is greater than 6 mm.
And a third judging unit 223 for judging that the anvil of the electromagnetic pile hammer is abnormal when the strain C2 of the anvil exceeds the second set strain value b2 or the vibration acceleration C8 of the anvil exceeds the first set acceleration value k 1.
In the embodiment of the present disclosure, b2 and k1 may be point values, or may be a certain range of values, and specific values may be set according to actual needs.
Illustratively, the first set strain value b1 < the second set strain value b2, the first set strain value b1 is 1.5 μm to 2.5 μm, and the second set strain value b2 is greater than 2.5 μm.
Optionally, the motor abnormality of the electromagnetic pile driving hammer comprises: the coil resistance of the electromagnetic pile hammer is at least one of abnormal heating, abnormal insulation resistance of the electromagnetic pile hammer, abnormal direct current resistance of the electromagnetic pile hammer and abnormal driving frequency converter of the electromagnetic pile hammer.
The coil resistance of the electromagnetic pile hammer generates heat abnormally, and the problems that the coil resistance drives the frequency converter to output too large current, the connection part of the wire core and the wiring copper bar is loosened to cause local heating, the gap between the motor stator and power is uneven and the like are solved. The abnormal insulation resistance of the electromagnetic pile hammer indicates that the motor is impacted by large current and is damaged in insulation. The direct current resistance of the electromagnetic pile hammer is abnormal, which indicates that the stator part of the motor has the problems of coil winding wire core breakage, wire core and wiring copper bar connection part loosening and the like. And if the driving frequency converter of the electromagnetic pile hammer is abnormal, the output voltage, the current amplitude or the output frequency of the driving frequency converter is abnormal. At this time, each faulty structure needs to be repaired or replaced.
The first judging unit 221 is configured to:
when the temperature C7 when the motor runs exceeds a first temperature set value q1, judging that the coil resistance of the electromagnetic pile driving hammer generates heat abnormally;
when the ratio C3/C4 of the voltage C3 between the driving frequency converter and the motor and the current C4 exceeds a first ratio d1 or the temperature C7 of the motor during operation exceeds a second temperature set value q2, judging that the insulation resistance of the electromagnetic pile hammer is abnormal;
when the current C4 between the driving frequency converter and the motor exceeds a first current value e1 or the temperature C7 when the motor runs exceeds a third temperature set value q3, judging that the direct current resistance of the electromagnetic pile hammer is abnormal;
and when the ratio C5/C6 of the output voltage C5 and the output current C6 of the driving frequency converter exceeds a second ratio d2, judging that the driving frequency converter of the electromagnetic pile driving hammer is abnormal.
In the embodiment of the present disclosure, q1, q2, q3, d1, d2, and e1 may be point values, or may be a certain range of values, and specific values may be set according to actual needs.
Illustratively, the first temperature setpoint q1 < the second temperature setpoint q2 < the third temperature setpoint q 3. The first temperature set value q1 ranges from 66 ℃ to 72 ℃, the second temperature set value q2 ranges from 73 ℃ to 80 ℃, and the third temperature set value q3 is greater than 80 ℃.
Illustratively, the first ratio d1 is 1.2-1.38, and the second ratio d2 is 1.39-1.55. First current value e1 is greater than 8000A.
Optionally, the anvil anomaly of the electromagnetic pile hammer comprises at least one of deformation of the anvil, and excessive vibration of the anvil.
When the anvil is deformed, it needs to be replaced. When the anvil vibrates too much, it also causes the anvil to deform, so that the force that the mover assembly ultimately exerts on the steel pile is not uniform. Therefore, the anvil needs to be repaired or replaced.
The third judging unit 223 is configured to:
when the strain C2 of the anvil exceeds a second set strain value b2, judging that the anvil of the electromagnetic pile driving hammer is deformed;
when the vibration acceleration C8 of the anvil exceeds the first set acceleration value k1, it is determined that the anvil of the electromagnetic pile hammer vibrates excessively.
In the embodiment of the present disclosure, b2 and k1 may be point values, or may be a certain range of values, and specific values may be set according to actual needs.
Illustratively, the first set acceleration value f1 is 3.5g to 5.5g, where g is the acceleration of gravity, and is 9.8m/s2。
Optionally, as shown in fig. 1, the detection module includes a displacement sensor 211 for detecting the running distance of the motor.
The detection end of the displacement sensor 211 is fixed on the stator component of the electromagnetic pile hammer, the detected end of the displacement sensor is fixed on the rotor component of the electromagnetic pile hammer, and the detection end and the detected end of the displacement sensor 211 are arranged oppositely. Specifically, the detecting end of the displacement sensor 211 is fixed on the top of the sealing shell 111a of the stator assembly 111, and the detecting end is fixed on the driving shaft 1121 of the rotor assembly 112.
The running distance of the motor is the moving distance of the rotor assembly of the electromagnetic pile driving hammer relative to the stator assembly.
Optionally, the detection module includes a strain sensor 212 and a vibration acceleration sensor 218.
Wherein the strain sensor 212 is used to detect the strain of the anvil. The strain sensor 212 is disposed on a contact surface of an anvil of the electromagnetic pile driving hammer that contacts the mover assembly.
In the disclosed embodiment, the strain sensor 212 may be disposed on the top of the anvil or a plurality of strain sensors may be disposed around the circumference of the anvil, and the strain sensor may compare parameters monitored by the plurality of strain sensors 212 at different positions to determine whether the anvil is deformed.
The vibration acceleration sensor 218 is used to detect the vibration acceleration of the anvil. The vibration acceleration sensor 218 is arranged on the anvil of the electromagnetic pile hammer. By detecting the vibration acceleration of the anvil, it can be determined whether the anvil is excessively vibrated.
Optionally, the detection module comprises a voltage sensor 213 and a current sensor 214 for detecting the voltage and the current, respectively, between the drive frequency converter and the motor.
Referring to fig. 1, the electromagnetic pile hammer has a connection cable for connecting a driving frequency converter and a motor, the connection cable is sleeved with a current loop K, and a voltage sensor 213 and a current sensor 214 are both arranged on the current loop K.
Optionally, the detection module comprises an output voltage sensor 215 and an output current sensor 216 for detecting the output voltage and the output current of the driving frequency converter, respectively.
The output voltage sensor 215 and the output current sensor 216 are built in a driving frequency converter of the electromagnetic pile driving hammer to ensure the accuracy of detection.
Optionally, the detection module includes a thermocouple sensor 217 for detecting the temperature of the motor during operation. The thermocouple sensor 217 is disposed within the coil winding of the electromagnetic pile hammer.
In the disclosed embodiment, the detection module may include a plurality of thermocouple sensors 217 distributed along the circumference of the coil windings. It should be noted that, in the embodiment of the present disclosure, a plurality of thermocouple sensors 217 may also be disposed on the stator assembly, which facilitates performing auxiliary judgment and improves detection accuracy.
Optionally, the processing module 220 may further include a data acquisition unit 224 and a signal conditioning unit 225.
A data acquisition unit 224, configured to acquire signals detected by each sensor in the detection module;
and a signal conditioning unit 225, configured to convert the acquired detected signals of the sensors into standard signals.
Illustratively, the data acquisition unit 224 may be a 1820 model a data acquisition instrument, highest sampling rate: is more than or equal to 200 kHz/channel. The signal conditioning unit 225 may be a 1210A type signal conditioner.
The embodiment of the disclosure provides a state monitoring method of a pile driving hammer, which is applicable to the state monitoring system described in the above embodiment.
Fig. 2 is a flowchart of a state monitoring method for an electromagnetic pile driving hammer according to an embodiment of the present disclosure, where as shown in fig. 2, the state monitoring method includes:
Wherein the operating parameters comprise at least one of a running distance C1 of the motor, a strain C2 of the anvil, a voltage C3 and a current C4 between the driving frequency converter and the motor, an output voltage C5 and an output current C6 of the driving frequency converter, a temperature C7 when the motor runs and a vibration acceleration C8 of the anvil.
In the embodiment of the present disclosure, the above operating parameters may be detected by various sensors, and refer to the related description of the above embodiment specifically.
Optionally, the abnormal operating condition includes at least one of an abnormality of a motor of the electromagnetic pile driving hammer, a risk of the electromagnetic pile driving hammer slipping, and an abnormality of an anvil of the electromagnetic pile driving hammer.
Step 202 may include:
step one, when the running distance of the motor exceeds a second set distance value, judging that the electromagnetic pile driving hammer has a pile slipping risk.
In this embodiment, if it is judged that the electromagnetic pile driving hammer has a pile slipping risk, the pile driving soil needs to be tested again to determine whether the pile driving soil is spongy soil, and the motor output is reduced or the pile driving operation at the position is abandoned according to the soil condition. And if the electromagnetic pile driving hammer is judged to have no pile slipping risk, further executing the step two.
And step two, judging that the motor of the electromagnetic pile hammer is abnormal when the running distance of the motor exceeds a first set distance value or the strain of the anvil exceeds a first set strain value.
Exemplary motor anomalies for an electromagnetic pile hammer include: the coil resistance of the electromagnetic pile hammer is at least one of abnormal heating, abnormal insulation resistance of the electromagnetic pile hammer, abnormal direct current resistance of the electromagnetic pile hammer and abnormal driving frequency converter of the electromagnetic pile hammer.
In this embodiment, if it is determined that the motor of the electromagnetic pile hammer is abnormal, the following steps 1 to 4 may be further performed:
1) when the temperature of the motor during operation exceeds a first temperature set value, judging that the coil resistance of the electromagnetic pile hammer generates heat abnormally;
2) when the ratio of the voltage between the driving frequency converter and the motor to the current exceeds a first ratio or the temperature of the motor during operation exceeds a second temperature set value, judging that the insulation resistance of the electromagnetic pile hammer is abnormal;
3) when the current between the driving frequency converter and the motor exceeds a first current value or the temperature of the motor during operation exceeds a third temperature set value, judging that the direct current resistance of the electromagnetic pile hammer is abnormal;
4) and when the ratio of the output voltage to the output current of the driving frequency converter exceeds a second ratio, judging that the driving frequency converter of the electromagnetic pile hammer is abnormal.
And if the motor of the electromagnetic pile hammer is judged to be not abnormal, executing the third step.
And step three, judging that the anvil of the electromagnetic pile hammer is abnormal when the strain of the anvil exceeds a second set strain value or the vibration acceleration of the anvil exceeds a first set acceleration value.
Optionally, the anvil anomaly of the electromagnetic pile hammer comprises at least one of deformation of the anvil, and excessive vibration of the anvil.
In this embodiment, if the anvil of the electromagnetic pile hammer is determined to be abnormal, the following steps may be further performed:
when the strain of the anvil exceeds a second set strain value, judging that the anvil of the electromagnetic pile hammer is deformed;
and when the vibration acceleration of the anvil exceeds a first set acceleration value, judging that the anvil of the electromagnetic pile hammer vibrates excessively.
It should be noted that the sequence of the above steps one to three is merely an example, and actually, the steps may be executed in other sequences, which is not limited in this embodiment.
Optionally, in this embodiment of the present disclosure, the state monitoring method may further include:
and repairing the electromagnetic pile driving hammer according to the judged abnormal working states of the electromagnetic pile driving hammer.
Illustratively, when the motor of the electromagnetic pile hammer is abnormal, the motor is replaced;
for example, when the insulation resistance of the electromagnetic pile hammer is abnormal, the insulation resistance is replaced; when the direct current resistance of the electromagnetic pile hammer is abnormal, the direct current resistance is replaced; and when the driving frequency converter of the electromagnetic pile hammer is abnormal, the driving frequency converter is replaced. When the coil resistance of the electromagnetic pile hammer generates heat abnormally, the distance between the rotor and the stator of the motor is checked, whether clamping stagnation exists in the attaching process or not is judged, and the spacing plug block between the rotor assembly and the stator assembly is adjusted or the coil resistance is replaced.
When the anvil of the electromagnetic pile hammer is abnormal, it is checked whether the contact surface between the anvil 150 and the hammer body 120 is deformed by hammering, and if so, the anvil is replaced.
The embodiment of the disclosure provides a state monitoring system of an electromagnetic pile hammer, which can detect working parameters of the electromagnetic pile hammer in real time, acquire the working parameters detected by a detection module, and judge whether the electromagnetic pile hammer is in an abnormal working state according to the working parameters, so as to judge whether the electromagnetic pile hammer is in the abnormal working state in advance and improve the reliability of the electromagnetic pile hammer. And the detected working parameters comprise at least one of the running distance of the motor, the strain of the anvil, the voltage and the current between the driving frequency converter and the motor, the output voltage and the output current of the driving frequency converter, the running temperature of the motor and the vibration acceleration of the anvil, the working state of each working part in the electromagnetic pile hammer can be monitored comprehensively, the monitored parameter types are more comprehensive, and the monitoring reliability of the electromagnetic pile hammer can be further improved.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. The state monitoring system of the electromagnetic pile hammer is characterized by comprising a detection module and a processing module;
the detection module is used for detecting working parameters of the electromagnetic pile hammer in real time, wherein the working parameters comprise at least one of the running distance of a motor, the strain of an anvil, the voltage and current between a driving frequency converter and the motor, the output voltage and output current of the driving frequency converter, the temperature of the motor during running and the vibration acceleration of the anvil;
and the processing module is used for acquiring the working parameters detected by the detection module and judging whether the electromagnetic pile hammer is in an abnormal working state or not according to the working parameters.
2. The condition monitoring system according to claim 1, wherein the abnormal operating condition includes at least one of an abnormality of a motor of the electromagnetic pile driving hammer, a risk of pile slipping of the electromagnetic pile driving hammer, and an abnormality of an anvil of the electromagnetic pile driving hammer;
the processing module comprises:
the first judgment unit is used for judging that the motor of the electromagnetic pile hammer is abnormal when the running distance of the motor exceeds a first set distance value or the strain of the anvil exceeds a first set strain value;
the second judging unit is used for judging that the electromagnetic pile driving hammer has a pile slipping risk when the running distance of the motor exceeds a second set distance value;
and the third judging unit is used for judging that the anvil of the electromagnetic pile hammer is abnormal when the strain of the anvil exceeds a second set strain value or the vibration acceleration of the anvil exceeds a first set acceleration value.
3. The condition monitoring system of claim 2, wherein the motor anomaly of the electromagnetic pile hammer comprises: the coil winding of the electromagnetic pile hammer is heated abnormally, the insulation resistance of the electromagnetic pile hammer is abnormal, the direct current resistance of the electromagnetic pile hammer is abnormal, and the driving frequency converter of the electromagnetic pile hammer is abnormal;
the first judging unit is used for:
when the temperature of the motor during operation exceeds a first temperature set value, judging that the coil resistance of the electromagnetic pile hammer generates heat abnormally;
when the ratio of the voltage between the driving frequency converter and the motor to the current exceeds a first ratio or the temperature of the motor during operation exceeds a second temperature set value, judging that the insulation resistance of the electromagnetic pile hammer is abnormal;
when the current between the driving frequency converter and the motor exceeds a first current value or the temperature of the motor during operation exceeds a third temperature set value, judging that the direct current resistance of the electromagnetic pile hammer is abnormal;
and when the ratio of the output voltage to the output current of the driving frequency converter exceeds a second ratio, judging that the driving frequency converter of the electromagnetic pile hammer is abnormal.
4. The condition monitoring system of claim 2, wherein the anvil anomaly of the electromagnetic pile hammer comprises at least one of anvil deformation, anvil over-vibration;
the third judging unit is used for:
when the strain of the anvil exceeds a second set strain value, judging that the anvil of the electromagnetic pile driving hammer is deformed;
and when the vibration acceleration of the anvil exceeds a first set acceleration value, judging that the anvil of the electromagnetic pile hammer vibrates excessively.
5. A condition monitoring system according to any of claims 1 to 4, wherein the detection module comprises a displacement sensor for detecting the distance of travel of the motor;
the detection end of the displacement sensor is fixed on the stator component of the electromagnetic pile hammer, the detected end of the displacement sensor is fixed on the rotor component of the electromagnetic pile hammer, and the detection end and the monitored end of the displacement sensor are arranged oppositely.
6. A condition monitoring system as claimed in any one of claims 1 to 4, wherein the detection module comprises a strain sensor and a vibration acceleration sensor;
the strain sensor is used for detecting the strain of the anvil; the strain sensor is arranged on a contact surface of an anvil iron of the electromagnetic pile driving hammer, which is in contact with the rotor assembly;
the vibration acceleration sensor is used for detecting the vibration acceleration of the anvil; the vibration acceleration sensor is arranged on an anvil of the electromagnetic pile hammer.
7. A condition monitoring system as claimed in any one of claims 1 to 4, wherein the detection module comprises a voltage sensor and a current sensor;
the voltage sensor is used for detecting the voltage between the driving frequency converter and the motor, and the current sensor is used for detecting the voltage and the current between the driving frequency converter and the motor;
the electromagnetic pile hammer is characterized in that a connecting cable used for connecting a driving frequency converter and a motor is arranged in the electromagnetic pile hammer, a current ring is sleeved outside the connecting cable, and both the voltage sensor and the current sensor are arranged on the current ring.
8. The condition monitoring system according to any one of claims 1 to 4, wherein the detection module comprises an output voltage sensor and an output current sensor for detecting an output voltage and an output current of the driving frequency converter, respectively;
the output voltage sensor and the output current sensor are arranged in a driving frequency converter of the electromagnetic pile driving hammer.
9. A condition monitoring system according to any of claims 1 to 4, wherein the detection module comprises a thermocouple sensor for detecting the temperature of the motor during operation;
the thermocouple sensor is disposed within a coil winding of the electromagnetic pile hammer.
10. A condition monitoring method of an electromagnetic pile hammer, which is applied to a condition monitoring system according to any one of claims 1 to 9, the condition monitoring method comprising:
detecting working parameters of the electromagnetic pile hammer in real time, wherein the working parameters comprise at least one of the running distance of a motor, the strain of an anvil, the voltage and current between a driving frequency converter and the motor, the output voltage and the output current of the driving frequency converter, the running temperature of the motor and the vibration acceleration of the anvil;
and acquiring the working parameters detected by the detection module, and judging whether the electromagnetic pile hammer is in an abnormal working state according to the working parameters.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452132A (en) * | 2022-08-31 | 2022-12-09 | 中国第一汽车股份有限公司 | Automatic monitoring method for vibration state of vibration hammer of casting blank vibration sand machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2507676A1 (en) * | 1975-02-22 | 1976-09-02 | Trapp Systemtechnik Gmbh | Pile driver with electromagnetic assistance - has ram as armature of linear motor for supergravitational acceleration |
| US4365306A (en) * | 1980-06-30 | 1982-12-21 | Conoco Inc. | Method and apparatus for remotely monitoring and evaluating pile driving hammers |
| RU2087621C1 (en) * | 1994-04-07 | 1997-08-20 | Самарский архитектурно-строительный институт | Pile-driving unit failure detector with radio channel |
| CN2263136Y (en) * | 1996-12-10 | 1997-09-24 | 中国科学院等离子体物理研究所 | Electromagnetic pile-driver |
| CN202837375U (en) * | 2012-10-11 | 2013-03-27 | 北京科锐配电自动化股份有限公司 | Electric current loop for voltage and current measuring signal transmission |
| CN203012424U (en) * | 2012-10-24 | 2013-06-19 | 卢世军 | Punching pile driver automatic control system |
| CN207407931U (en) * | 2017-10-30 | 2018-05-25 | 陕西桩鑫建设工程有限公司 | Stake machine digitalization surveillance ＆ control system |
| CN212300582U (en) * | 2020-04-30 | 2021-01-05 | 佳运通电子科技（昆山）有限公司 | Linear motor system with displacement detection function |
| CN112526392A (en) * | 2020-11-26 | 2021-03-19 | 福建龙净环保股份有限公司 | Electromagnetic vibrator detection device and electromagnetic vibrator fault detection method |
-
2021
- 2021-07-29 CN CN202110866766.8A patent/CN113739843B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2507676A1 (en) * | 1975-02-22 | 1976-09-02 | Trapp Systemtechnik Gmbh | Pile driver with electromagnetic assistance - has ram as armature of linear motor for supergravitational acceleration |
| US4365306A (en) * | 1980-06-30 | 1982-12-21 | Conoco Inc. | Method and apparatus for remotely monitoring and evaluating pile driving hammers |
| RU2087621C1 (en) * | 1994-04-07 | 1997-08-20 | Самарский архитектурно-строительный институт | Pile-driving unit failure detector with radio channel |
| CN2263136Y (en) * | 1996-12-10 | 1997-09-24 | 中国科学院等离子体物理研究所 | Electromagnetic pile-driver |
| CN202837375U (en) * | 2012-10-11 | 2013-03-27 | 北京科锐配电自动化股份有限公司 | Electric current loop for voltage and current measuring signal transmission |
| CN203012424U (en) * | 2012-10-24 | 2013-06-19 | 卢世军 | Punching pile driver automatic control system |
| CN207407931U (en) * | 2017-10-30 | 2018-05-25 | 陕西桩鑫建设工程有限公司 | Stake machine digitalization surveillance ＆ control system |
| CN212300582U (en) * | 2020-04-30 | 2021-01-05 | 佳运通电子科技（昆山）有限公司 | Linear motor system with displacement detection function |
| CN112526392A (en) * | 2020-11-26 | 2021-03-19 | 福建龙净环保股份有限公司 | Electromagnetic vibrator detection device and electromagnetic vibrator fault detection method |
Non-Patent Citations (2)
| Title |
|---|
| 吕鑫: "多功能电磁打桩机测控系统的设计", 中国学位论文全文数据库, pages 6 - 10 * |
| 陈祖强 等: "基于LS-DYNA风电安装起重机溜桩工况安全高度计算", 港口装卸, pages 34 - 36 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452132A (en) * | 2022-08-31 | 2022-12-09 | 中国第一汽车股份有限公司 | Automatic monitoring method for vibration state of vibration hammer of casting blank vibration sand machine |
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